4 replies to this topic

[ProcessLRC]

Good afternoon,

I am a process engineer working in the oil refining and related industries. We have the viscosity of a vacuum residue as: " Kansas viscosity".
Does anybody know what this means - is it a measure of dynamic viscosity or kinematic viscosity, what is the reference temperature for this system of measurement and what is the conversion factor to a more frequently used system of units e.g cP or cSt or similar.

Thanks in advance for any help.
Regards
ProcessLRC

[Himanshu Sharma]

A plausible explanation is that may be your VDU is designed for the Kansas Crude and the reported density of VR corresponds to that.

[ProcessLRC]

Dear Himanshu,

Thank you for the suggestion. The vacuum residue is derived from ma heavy Mexican crude.

Regards

[kkala]

http://www.kgs.ku.ed...14_7/index.html may suggest an answer, but only
as an interpretation.
If it is e.g. "Kansas viscosity = 10", it may mean sample No 10, with viscosity 4.5, 3.05, 2.46 cP at 70, 100, 120 oF respectively (there are many samples, No 10 is not proper for vacuum residue).
If it is merely written "Kansas viscosity", it may mean application of relevant diagrams of the article, showing viscosity versus API gravity at several temperatures.
At any case you had better find who defined the "Kansas viscosity" and confirm; or try to estimate viscosity from other properties of the vacuum residue.

Edited by kkala, 25 November 2010 - 12:08 PM.

[ProcessLRC]

Dear Kkala,

Thank you for the reference and advice. I have asked the refiner for the definition of Kansas viscosity and reference temperature for the viscosity data.

Regards